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For the report-type Issue → Sub-Task, to include the issues without sub-tasks, select Include issues without sub-tasks.
For the report-type Issue → Linked Issue, Epic → Linked Epic → Issue, and Issue > Linked Epic > Issue,to view the link type, select Include link type.
The Report Designer Interface provides help text for each report type. To know more about how the various report types work, navigate to report-specific help text:
How does issue-subtask report work?
How does epic-issue report work?
How does epic-issue-subtask report work?
How does issue-linkedissue report work?
How does epic-linkedepic report work?
How does issue-linkedepic report work?
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